Endless belt power transmission systems or components – Friction drive pulley or guide roll – Including nonmetallic belt-engaging surface portion
Patent
1984-02-27
1986-02-18
Novosad, Stephen J.
Endless belt power transmission systems or components
Friction drive pulley or guide roll
Including nonmetallic belt-engaging surface portion
474180, 474902, F16H 5548
Patent
active
045712263
ABSTRACT:
A moldable, plastic idler pulley is formed of two halves, each having a matching central hub and a radially outwardly extending web with radially disposed strengthening ribs on the outside thereof. The inner side of each central hub has a moldable stepped portion which closely mates the other hub. The stepped portions of each hub and the ribs have no under cuts or reverse bends and may be molded by two simple, axially parting mold elements. After molding, the ribs cooperate with a rotary machine to allow the stepped portions of each hub to be spin welded together. A central bearing may be captured between the hubs during the welding process, if desired.
REFERENCES:
patent: 237910 (1881-02-01), Ryno
patent: 398897 (1889-03-01), Kisinger
patent: 893889 (1908-07-01), Zamboni
patent: 2933934 (1960-04-01), Haroldson
patent: 3618411 (1971-11-01), Rottweiler
patent: 3848309 (1974-11-01), Nuss
patent: 4068907 (1978-01-01), Zenthoefer
patent: 4177685 (1979-12-01), Delancey
patent: 4193310 (1980-03-01), Boyer et al.
Molloy Edward W.
Richard, Jr. Raymond L.
Bui Thuy M.
General Motors Corporation
Griffin Patrick M.
Novosad Stephen J.
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